Fig. 7. Photos showing various (a) initial shape, (b) fixed shape and (c) permanent shape at room temperature treated by Na2CO3, K2CO3, K2HPO4 solution.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.